Many just aren't aware their WiFi network relies on WEP security measures that are easy to breach because their old router appears to be working fine.
"They look at the technology and thinks if it's not broken don't fix it. The problem is, it doesn't look broken," says Stilgherrian.
"Is it working to defend your data against hackers? That's not something you can see until it's too late."
New setups make use of Wired Point of Access (WPA) and WPA 2 encryption techniques, but even these aren't infallible to hacks.
"WPA is actually pretty good, but it's always a matter of time," says Chris Gatford of 'ethical hacking' firm HackLabs. HackLabs tests the security of banks and other big companies.
"But if you make the time required to crack into the network onerous, then you'll discourage hackers," Gatford says.
Being an IT whiz is no longer a requisite for hacking a network with step-by-step guides flooding the internet.